Rihanna Parties In West Hollywood For Halloween

WEST HOLLYWOOD, CA - OCTOBER 31: Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. (Photo by David Livingston/Getty Images)

Rihanna Parties In West Hollywood For Halloween

WEST HOLLYWOOD, CA - OCTOBER 31: Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. (Photo by David Livingston/Getty Images)

Rihanna Parties In West Hollywood For Halloween

WEST HOLLYWOOD, CA - OCTOBER 31: Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. (Photo by David Livingston/Getty Images)

Rihanna Parties In West Hollywood For Halloween

WEST HOLLYWOOD, CA - OCTOBER 31: Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. (Photo by David Livingston/Getty Images)

Rihanna Parties In West Hollywood For Halloween

WEST HOLLYWOOD, CA - OCTOBER 31: Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. (Photo by David Livingston/Getty Images)

Rihanna Parties In West Hollywood For Halloween

WEST HOLLYWOOD, CA - OCTOBER 31: Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. (Photo by David Livingston/Getty Images)

Rihanna Parties In West Hollywood For Halloween

Douglas Libby (L) and Steve Henry (R) parade on Santa Monica Blvd. during the annual Halloween Carnaval in West Hollywood, California on October 31, 2012. Organizers claimed it was the largest Halloween party in the world with crowds expected to reach 500,000 people. (Photo ROBYN BECK/AFP/Getty Images)

Rihanna Parties In West Hollywood For Halloween

Costumed revellers Josiah (R) and Juanito (L) parade on Santa Monica Blvd. during the annual Halloween Carnaval in West Hollywood, California on October 31, 2012. Organizers claimed it was the largest Halloween party in the world with crowds expected to reach 500,000 people. (Photo ROBYN BECK/AFP/Getty Images)

Rihanna Parties In West Hollywood For Halloween

Costumed revellers parade on Santa Monica Blvd. during the annual Halloween Carnaval in West Hollywood, California on October 31, 2012. Organizers claimed it was the largest Halloween party in the world with crowds expected to reach 500,000 people. (Photo ROBYN BECK/AFP/Getty Images)

Rihanna Parties In West Hollywood For Halloween

A reveller dressed as US presidential candidate Mitt Romney carrying a "binder full of women" parades on Santa Monica Blvd. during the annual Halloween Carnival in West Hollywood, California on October 31, 2012. Organizers claimed it was the largest Halloween party in the world with crowds expected to reach 500,000 people. (Photo ROBYN BECK/AFP/Getty Images)

Rihanna Parties In West Hollywood For Halloween

Revellers fill the street on Santa Monica Blvd. at the annual Halloween Carnaval in West Hollywood, California on October 31, 2012. Organizers claimed it was the largest Halloween party in the world with crowds expected to reach 500,000 people. (Photo ROBYN BECK/AFP/Getty Images)

Rihanna Parties In West Hollywood For Halloween

Revellers crowd shoulder to shoulder on Santa Monica Blvd. at the annual Halloween Carnaval in West Hollywood, California on October 31, 2012. Organizers claimed it was the largest Halloween party in the world with crowds expected to reach 500,000 people. (Photo ROBYN BECK/AFP/Getty Images)

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Recording artist Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood in celebration of Halloween 2012 at Greystone Manor Supperclub on October 31, 2012 in West Hollywood, California. *** Local Caption *** Rihanna